The outbreak of the Korea War was a typical emergency which happened shortly after the establishment of the People's Republic of China.To fight against America in aid of Korea was a crucial resolution made by the then Chinese government for this emergency.The response and decision made by the Chinese government, which included the prevention of and the preparation and decision for this emergency, was quite reasonable and effective and even benefits people until today.The important benefit learned from that is very instructive for current people when making response to emergencies, whereas the passiveness of that is never negligible and should be abandoned.